Issue
The IO Module does not report input signals and all physical outputs are turned off.
The IO module status LED blinks at a rate of one blink per second.
Product Line
EcoStruxure Building Operation
Environment
I/O Module
Cause
The IO module has been placed into Low Power Mode.
Resolution
I/O Module Low Power Mode
In order to save energy, an I/O module can be placed in low power. When an I/O module is in low power, the following conditions apply:
- The I/O module does not report input signals and all physical outputs are turned off.
- The Module status reports low power.
- The I/O module's LED pattern indicates low power (the slowest green LED blink pattern, approximately once every 3 seconds).
When you set an I/O module to low power, the software turns off all outputs.
When you want to recover an I/O module from low power, there are several points to consider:
- Make sure all I/O module Output values are set to a safe level before a return to normal power conditions. This prevents "power surge" conditions.
- After normal power resumes, the Output values set are reached immediately after any timing delay occurs.
Setting and Recovering an I/O Module from Low Power
Place an I/O module in low power mode in order to save energy and then recover that module later.
To set and recover an I/O module from low power
- In WorkStation, in the System Tree pane, expand the IO Bus.
- Click the I/O module that you want to put in Low power mode.
- Click File and then Properties.
- Under Configuration Settings, in the Low power box, select True.
- Click OK to change the value and close the Properties tab.
If the physical I/O module, shown in the System Hardware folder, matches the logical I/O module defined in the I/O Bus, the I/O module goes into Low power.
After the physical module enters low power, the Module status attribute in the Status Information area displays Low power.
To set and recover an I/O module from low power
- In the System Tree pane, expand the IO Bus to recover from low power mode.
- Click the I/O module to recover.
- Click File and then Properties.
- Under Configuration Settings, in the Low power box, select False.
- Click OK to change the value and close the Properties pane.
If the physical I/O module, shown in the System Hardware folder, matches the logical I/O module defined in the I/O Bus folder, the I/O module exits from low power.
After the module resumes operation from low power, the Module status returns to the status it had before it went into Low power.
NOTE: If unable to change the Low Power property:
- Export the contents of the I/O module
- Deleted it from the AS
- Re-add it to the AS
- Import the XML back into the module
